Locomotive-boiler.



PATENTED JULY l1, 1905.

J. F. SWEENEY.

vLOCOMUTIVE BOILER.

APPLICATION FILED JAN. 9. 1905.

2 SHEETS-SHEET l.

we mam Jay@ No. 794,566. PATENTED JULY 1l, 1905.

J. P. .SWBBNEY- LOGOMOTIVE BUILER.

APPLICATION FILED JAN. 9. 1905v 2 SHEETS-SHEET 2. V

' www UNITED STATES Patented July 11, 1905.

PATENT GEETCE.

LOCOIVIOTIVE-BOILER.

SPECIFICATION forming part of Letters Patent No. 794,566, dated July 11, 1905.

Application filed Ianuary 9, 1905. Serial No. 240,172.

To all whom it may concern:

Be it known that I, JAMES F. SWEENEY, a

y. citizen of the United States, residing in the city ing is a specification.

My invention consists of a novel construction of locomotive-boiler in which the smoke is consumed and the fuel economized.

It also consists in means for supplying superheated air to the combustion-chamber.

It also consists in other novel features of construction, as will be hereinafter set forth, and pointed out in the claims.

Figure 1 represents a vertical sectional View of a locomotive-boiler embodying my invention. Fig. 2 represents a transverse section on line Fig. 1. Fig. 3 represents atransverse section on line y y, Fig. 1.

Similar numerals of reference indicate corresponding parts in the figures.

Referring to the drawings, 1 designates the shell of a locomotive-boiler having a fire-box 2, which has a door 3 therefor hinged at 4. Connected Withthe fire-box is a drum 5, in which are situated the pipes 6, extending longitudinally therethrough, and which are connected with each other at their ends by plates 7. The pipes 6 form the passages 8, which connect the lire-box with the combustionchamber 9, which latter has a manhole 10 and a door 11. Two drums 12 and 13 are located above the drum 5 and have connections 14 therewith through which the water passes from one drum to the other.

The space between the three drums and the connections 14 forms an air passage or chamber 15, which acts as a Iiue and also serves to heat the air for combustion. Extending through the chamber 15 is a pipe 16, having an inlet end 17 open to the atmosphere, its other end 18 extending into the combustionchamber 9, and having, if desired, a plurality of discharge-ports 19.

The drums 12 and 13 are connected with the lire-box 2 by the pipes 20, which causea better circulation through the three drums. A

steam-drum 21 above the two boilers 12 and 13 has pipes 22 leading therefrom to two ldrums 12 and 13.

23 designates the water-line in the drums 12 and 13. Extending through the latter are npassages or flues 24, which open at one end into the combustion-chamber 9 and at the other end into the smoke-box 25, which issecured above the fire-box 2 and which has a smoke-stack 26.

The air-chamber 15, formed by the three drums and the connecting-pipes 14, serves as a flue to assist the upper sets of fines in the drums 12 and 13 to carry off the gases of combustion, and as the air-supply pipe passes through the chamber 15 between the smokeboX and the fire-box and between the drums the air entering the combustion-chamber 9 will be superheateol.

In the present instance I show the air-pipe 16 as passing through the smoke-box; but this may be located between the smoke-box and the fire-box, if so desired.

Owing to the position-of the air-pipe 16 being directly above the drum and the firebox, as well as beneath the two drums 12 and 13, the air passing therethrough will be heated, so that superheated air is supplied to the combustion-chamber 9 and commingles with the products of combustion and smoke, so that the same will be consumed and pass through the drums 12 and 13 backwardly from the combustion-chamber and out through the smoke-box 25 and stack 26.

It will be apparent that the superheated air supplied to the combustion-chamber will promote combustion, and as the chamber is large enough to cover the sets of tubes in the different drums it will be more eiiicient than a smaller combustion chamber supplied with cold air, as has heretofore been the construction used.

I employ enough connections 14 between the drums 5 and 12 and 13 to insure good circulation of the water and enough connections for the steam-drum to have a free escape of the steam into the steam-drum, it being apparent that the water is free to circulate in the drums, which are subjected to the heat in such a manner as to enlarge the heatingsurface, and consequently the supply of steam, with the same amount of fuel.

I preferably make the tire-box of circular crown-sheets, so as to be able to use angleirons in front, which may be removed when desired without disturbing the other parts of the boiler.

Considerably more steam in proportion to the grate-surface is produced by the use of ,my construction than can be obtained from the ordinary form of locomotive-boilers, and

in addition the smoke and other gases as products of combustion will be consumed.

It will be evident that various changes may be made by those skilled in the art, and I do not, therefore, desire to be limited to the exact construction herein shown and described.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent. is-

1. In a locomotive-boiler, aiire-box, a plurality of drums, a combustion-chamber and means interposed between said drums for superheating the air-supply to said chamber.

2. In a locomotive-boiler, a main drum, a plurality-of drums above said main drum, an air-chamber, and a combustion-chamber intermediate to the other members along the course of the furnace-gases.

3. In a locomotive-boiler, a plurality of drums, a steam-drum, a combustion-chamber and an air-chamber between said drums for superheating the air-supply to said combustion-chamber.

4. In a locomotive-boiler, a plurality of drums, a steam-drum, a combustion-chamber, an air-chamber between said drums for superheating the air-supply to said combustionchamber and an air-pipe passing through said air-chamber and opening into said combustion-chamber.

5. In a locomotive-boiler, a main drum, a plurality of drums, a steam-drum connected to said plurality of drums, a ire-boX, a combustion-chamber in the path of the products of combustion from the main drum to said plurality of drums, a superheating air-chamber between two drums, a smoke-box at lthe rear of the drums, and a smoke-stack communicating with said smoke-box.

6. In alocomotive-boiler,aiirebox,asmoke box, a plurality of drums an air-chamber between said drums for superheating the airsupply to the combustion-chamber and a comsupply-to the'combustion-chamber, a smokey box, passages through said independent drums connecting said com bustion-chamber with said smoke-box and a steam-drum above said independent drums and connected therewith.

8. In a locomotive-boilena main drum, a plurality of drums above said main drum and connected therewith, an air-chamber between said drums, an air-supply pipe in said chamber, a combustion-chamber in the passage of the products of combustion between said main drum and the other drums and into which said supply-pipe discharges and a plurality of ports at the discharge end of said pipe.

9. In a locomotive-boiler, a main drum, a plurality of drums above said main drum and connected therewith, tubes passing through said drums, a combustion-cham ber into which said tubes open and means including an airchamber between said drums for superheating the air-supply to said chamber.

10. In a locomotive-boiler,a fire-box, a main drum, a plurality of drums above said main drum, connecting-pipes between the latter and said plurality of drums, a connection between each drum and the .water-spaces about the iirebox, a combustion-chamber an air-chamber between said drums for superheating the airsupply to the combustion-chamber and iiues passing longitudinally through all of said drums and opening into said chamber.

11. In a locomotive-boiler, a steam-drum, a plurality of drums and means for consuming the gases of combustion, said means embodying an air-chamber and an air-supply pipe therein between the rst drum and the. suoceeding drums.

12. In a locomotive-boiler, a fire-box., a plurality of drums an interposed air-space, and connecting-pipes between the water-spaces about the said fire-box and said pluralityof drums.

JAMES F. SWEENEY.

IOO 

